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1. 发明专利

HK1022234A1 RESISTANCE ELEMENT 未知
公开(公告)号：HK1022234A1
公开(公告)日：2000-07-28
申请号：HK00101069
申请日：2000-02-23
申请人： TDK CORP
发明人： SAWAMURA KENTARO
IPC分类号： F23Q7/00 , H01C17/02 , H01C17/065 , H05B3/14 , H05B , H01C
摘要： Concerning a resistance element comprising a laminated and sintered article of an insulating material substrate layer and a conductor layer formed on or embedded in the insulating material substrate layer, a material which is constituted of tungsten and carbon and has an atomic ratio of tungsten to carbon equal to 1:0.4 to 1:0.98 is used as said conductor layer. Such resistance element can be used at a temperature of 1400 DEG C or more and even further at a temperature of 1500 DEG C or more. The resistance element can increase its temperature rapidly to 1100 DEG C or more within about 3 seconds without any control circuit. The resistance element is a rapid temperature-rise resistance element with a high ignition performance constituted of ceramics with superior durability including resistance to repetitions of temperature increase and decrease, and resistance to oxidation at a high temperature.

2. 发明公开

EP0748144A4 RAPID HEATING ELEMENT AND ITS MANUFACTURING METHOD 失效
标题翻译： SCHNELLAUFHEIZENDES元及其制造方法
公开(公告)号：EP0748144A4
公开(公告)日：1999-03-10
申请号：EP95942279
申请日：1995-12-27
申请人： TDK CORP
发明人： SAWAMURA KENTARO , MITSUHASHI ETSUO , NANAO MASARU , MIKI NOBUYUKI , KITAJIMA MASAHIRO , YODOGAWA MASATADA
IPC分类号： F23Q7/00 , H05B3/14
CPC分类号： H05B3/141 , F23Q7/001 , F23Q2007/004
摘要： A rapid heating element is provided with a heating section (1) and a lead section (2). The heating section (1) is equipped with a heating section ceramic conductor. The heating-section conductor is composed of four or more heating-section conductive layers (1a) alternated with heating-section insulating layers (1c) and heating-section conductive layer connecting sections (1b) connecting the adjacent heating-section conductive layers (1a). The lead section (2) is equipped with a lead-section ceramic conductor which is composed of first and second lead-section conductive layers (2a and 2b), and a ceramic lead-section insulating layer (2c) sandwiched between the conductive layers (2a, 2b). Therefore, a highly durable rapid heating element which can be efficiently and inexpensively manufactured while maintaining its characteristics as a heating element can be provided.

3. 发明专利

DE69424478T2 未知
公开(公告)号：DE69424478T2
公开(公告)日：2001-01-18
申请号：DE69424478
申请日：1994-07-19
申请人： TDK CORP
发明人： SAWAMURA KENTARO , MIKI NOBUYUKI , KITAJIMA MASAHIRO , MITSUHASHI ETSUO , YODOGAWA MASATADA , SATO SHINICHI , OKAMURA AKIO , KONDO RYOICHI
IPC分类号： C04B35/117 , F23Q7/00 , H05B3/14 , C04B35/01
摘要： A rectangular plate shaped rapid temperature rise heater element includes a sintered insulating ceramic layer, an exothermic section, and first and second lead layers for applying voltage across the exothermic section to develop heat. Typically the sintered insulating ceramic layer, exothermic section, and lead layers are formed of ceramic compositions composed mainly of an identical insulating component in the form of a metal oxide, typically Al2O3 and an identical conductive component in the form of a metal silicide and/or carbide, typically MoSi2, blended in different ratios for the respective layers. The heater element is easy and inexpensive to manufacture, capable of rapid heating, and durable.

4. 发明专利

DE69424478D1 未知
公开(公告)号：DE69424478D1
公开(公告)日：2000-06-21
申请号：DE69424478
申请日：1994-07-19
申请人： TDK CORP
发明人： SAWAMURA KENTARO , MIKI NOBUYUKI , KITAJIMA MASAHIRO , MITSUHASHI ETSUO , YODOGAWA MASATADA , SATO SHINICHI , OKAMURA AKIO , KONDO RYOICHI
IPC分类号： C04B35/117 , F23Q7/00 , H05B3/14 , C04B35/01
摘要： A rectangular plate shaped rapid temperature rise heater element includes a sintered insulating ceramic layer, an exothermic section, and first and second lead layers for applying voltage across the exothermic section to develop heat. Typically the sintered insulating ceramic layer, exothermic section, and lead layers are formed of ceramic compositions composed mainly of an identical insulating component in the form of a metal oxide, typically Al2O3 and an identical conductive component in the form of a metal silicide and/or carbide, typically MoSi2, blended in different ratios for the respective layers. The heater element is easy and inexpensive to manufacture, capable of rapid heating, and durable.

5. 发明专利

JP2000286105A RESISTIVE ELEMENT, ITS MANUFACTURE, AND METHOD FOR JOINTING ELECTRODE 失效
公开(公告)号：JP2000286105A
公开(公告)日：2000-10-13
申请号：JP8775899
申请日：1999-03-30
申请人： TDK CORP
发明人： SAWAMURA KENTARO
IPC分类号： H01C1/144 , H01C7/04 , H01R4/02
摘要： PROBLEM TO BE SOLVED: To provide a resistive element, which is constituted into a structure such that the extraction electrodes of internal conductors can be jointed firmly to lead wires, and a method for manufacturing the element. SOLUTION: A resistive element has a main body 22, internal electrodes 14 embedded in the main body 22, and extraction electrodes 15, which are exposed on the external surface of the main body 22 and connected to the conductors 14. The electrodes 15 are composed of columnar conductors, extending along the thickness direction of the main body through an internal electrode pattern surface 14a of the internal conductors 14, and at least one ends 15a of the columnar conductors are exposed to the external surface of the main body 22. Lead wires 24 are respectively spot-welded to the exposed ends 15a of the columnar conductors via a metal foil 26a.

6. 发明专利

JPH11320200A SPACER FOR HOT PRESS AND ITS PRODUCTION 失效
公开(公告)号：JPH11320200A
公开(公告)日：1999-11-24
申请号：JP12644798
申请日：1998-05-08
申请人： TDK CORP
发明人： SAWAMURA KENTARO
IPC分类号： B26F3/00 , B22F3/10 , B28D1/00 , B30B15/34
摘要： PROBLEM TO BE SOLVED: To obtain a spacer which can produce a desired shaped chip from a difficult-to-cut hard sintered compact without using a hard tool by providing protrusion bars having a convex cross sectional shape on at least one face of a heat resistant plate. SOLUTION: This spacer 1 is equipped with spacer protrusion bars 3 at an equal interval on a spacer base element 2, and may be formed in a given shape such as a parallel line shape, a lattice shape, and a circular shape. The spacer 1 and a sintering green sheet are alternately overlapped and sintered. Graphite, tungsten, carbide such as titanium, nitride and the like, are used for the spacer 1. Further, a material having a higher melting point than the ceramics produced by a hot press and a smaller thermal expansion coefficient than the sintered compact, is used for the spacer. Thereby, in the cooling after sintering, since the shrinkage percentage of the sintered compact is bigger than that of the spacer 1, the stress is concentrated to the minimum thickness portion so that the sintered compact is naturally cut. The minimum thickness of a bar groove portion is formed to be 0.1-2 mm, so that the sintered compact sheet is easily snapped off by hand.

7. 发明专利

JPH07296953A METHOD FOR FORMATION OF SILICON OXIDE PROTECTION FILM ON SURFACE OF SILICIDE CONDUCTOR AND CERAMIC HEATER ELEMENT 失效
公开(公告)号：JPH07296953A
公开(公告)日：1995-11-10
申请号：JP11445994
申请日：1994-04-28
申请人： TDK CORP
发明人： MIHASHI ETSUO , KITAJIMA MASAHIRO , MIKI NOBUYUKI , SAWAMURA KENTARO , YODOGAWA MASATADA
IPC分类号： H05B3/14 , C04B35/10 , C04B35/58 , C04B41/87 , H01B5/14
摘要： PURPOSE:To form a dense protection film of silicon oxide over the surface of a conductor using a simple process by feeding a current to the conductor containing silicides for a certain time so that the conductor itself gets a high temp. in an oxidative atmosphere. CONSTITUTION:The common materials Al2O3 and MOSi2 are used in an insulative ceramic sintering layer 1, heat emission part 2, and the first and second lead layers 3, 4, wherein the Al2O3 contents of the layers should be 100, 70, 20wt.%, respectively. To this material, a binder and a solvent are added, followed by mixing, kneading, and shaping into a sheet. A plurality of such sheets are laid in a die in a specified structure so that a laminate is accomplished through a hot pressure attachment, The resultant is cut into a specified size, gets rid of the binder, and is subjected to a baking process, and at one end, Pd-Ag electrodes 5, 6 are formed, followed by electrical welding of leads so that a specimen is formed. A voltage is impressed so that the max. temp. region of the specimen becomes 1700 deg.C, followed by leaving for one hr, and an oxide film is formed. At this time, an Ar gas atmosphere is used until the element temp. 600 deg.C is attained, and then the air is used.

8. 发明专利

JPH07106055A QUICK TEMPERATURE RAISING HEATING ELEMENT AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH07106055A
公开(公告)日：1995-04-21
申请号：JP18778294
申请日：1994-07-18
申请人： TDK CORP
发明人： SAWAMURA KENTARO , MIKI NOBUYUKI , KITAJIMA MASAHIRO , MIHASHI ETSUO , YODOGAWA MASATADA , KONDO RYOICHI
IPC分类号： H05B3/14 , H01B5/16 , H01C7/04
摘要： PURPOSE:To provide a quick temperature raising heating element which is easily manufactured at low cost and has high durability and high performance. CONSTITUTION:A quick temperature raising heating element has an electrically insulating ceramic sinter layer 1, first and second high resistance conductive ceramic sinter layers 2a, 2b, and a high resistance conductive ceramic connecting part 2c which is unitedly formed with the ceramic sinter layers 2a, 2b, and also has a heating part 2 which forms a current path extending to other side through the connecting part 2c, and first and second lead layers 3, 4 formed with a low resistance conductive material on the same surface as the ceramic sinter layers 2a, 2b, or on at least part of the surface of the ceramic sinter layers 2a, 2b. The total thickness of the element is specified to 100-2000mum, the width to 200-500mum, and the length to 15-70mum.

9. 发明专利

JPH06201128A HEAT GENERATING BODY FOR IGNITION 失效
公开(公告)号：JPH06201128A
公开(公告)日：1994-07-19
申请号：JP36053992
申请日：1992-12-28
申请人： TDK CORP
发明人： YODOGAWA MASATADA , SAWAMURA KENTARO , KITAJIMA MASAHIRO , MIHASHI ETSUO
IPC分类号： F23Q7/00
摘要： PURPOSE:To provide a stable quality, in which the variation of resistance value comes from use is small, by a method wherein a base material is constituted of the principal constituent of sialon and a conductive material is added with sialon. CONSTITUTION:A heat generating body 1 is constituted of a sintered body having the laminated structure of a base material, having the principal constituent of sialon consisting of high resistant body or insulating body, and conductive bodies 3-5 containing sialon. When the principal constituent of the sialon of the base material is shown by Si6-zAlzOzN8-z [wherein; (total number of O-atom and N-atom) : (total number of Si-atom and Al atom) = 0.735-0.77], Z is specified so that Z=0.1-4.0 while 0.05-10mol% of a rare earth oxide is contained in the base material to sinter the same. On the other hand, the principal material of the conductive body 3-5 is specified so as to be silicate and 15-99vol% of silicate is contained while the balance of the same is constituted of sialon and the rare earth oxide and 0.05-10mol% of rare earth oxide is contained in the conductive bodies 3-5 to sinter them. According to this method, a heat generating body for igniting, in which the variation of resistance value comes from use is small and which is provided with stabilized quality, can be obtained.

10. 发明专利

JPH0597513A HIGH-DIELECTRIC CONSTANT CERAMIC COMPOSITION HAVING HIGH RELIABILITY 失效
公开(公告)号：JPH0597513A
公开(公告)日：1993-04-20
申请号：JP8938991
申请日：1991-03-29
申请人： TDK CORP
发明人： UCHIKOBA FUMIO , KOSAKA YOSHIO , SATO SHINICHI , SAWAMURA KENTARO , HIRAKATA KEIGO
IPC分类号： C04B35/46 , H01B3/12
摘要： PURPOSE:To obtain the subject composition, capable of reducing burning temperature, excellent in reduction resistance and having long life by including an alkaline earth metallic oxide, lead silicate and a specific metallic oxide in respective small amounts in a lead-based complex perovskite. CONSTITUTION:A ceramic composition containing 0.01-1.0mol% alkaline earth metallic oxide, 0.02-1.0mol% lead silicate and a metallic oxide expressed by formula II in an amount without exceeding 1mol% based on the basic composition expressed by the formula [0.95

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